25results about How to "Eliminate voids" patented technology

This invention belongs to the field of welding workpiece positioning tooling technology, specifically a multi-angle welding device for galvanized steel pipes based on a rotating station, including a welding base; a welding head is provided on the welding base; by fixing two galvanized steel pipes to the center of a first rotating ring plate, the first rotating ring plate is adjusted and limited after the steel pipe mating surface is closed, and the first electric slide is slid according to the pipe length, and the steel pipe is rotated to the mating end by a second servo motor, and the welding assembly cooperates with the laser head to perform circumferential welding; during welding, the first servo motor drives the steel pipe to rotate, and the laser head is finely adjusted to complete the full circle welding. When welding at a large angle, the two first electric slides are moved away from each other and the angle is adjusted by the second servo motor; when welding at a small angle, the two first electric slides are brought closer together and the angle is adjusted to meet various angle welding requirements. If the mating surface is a beveled surface, the ring plate can be released, the first rotating ring plate can be adjusted to make the beveled surface correspond before being fixed to ensure a neat mating.

The utility model provides a kind of insulating bearing cable anchor, comprising: connecting component, with power transmission line hardware connection and bear load;Core body lifting ring, accommodate the glass fiber reinforced silicone rubber wire harness wound to form core body and bear load;Clamp, the inner cavity of the clamp is horn shape, the horn shape inner cavity is consistent with the wire harness of the core body lifting ring wire slot tangent direction introduction, gather has been wound in the core body lifting ring, wire harness, which needs to be shaped, is shrunk into substantially cylindrical through the cylindrical outlet of the clamp;The connecting component is connected with the core body lifting ring, and the clamp is tightly clamped on the core body lifting ring. The utility model has the beneficial effects that: by the inner cavity of the clamp is horn shape, improve the stress state of wire harness, and by additionally provided glue injection hole groove A and glue injection hole B, form complete sealing structure after silicone rubber overall coating forming, improve the reliability of product and overall electromechanical performance.

The utility model relates to an intelligent mini vibrating and leveling machine, and belongs to the technical field of road and bridge construction equipment. Comprising a walking base with walking wheels, a lifting mechanism installed on the walking base, a vibrating mechanism driven by the lifting mechanism to ascend and descend and a paving and leveling mechanism. The vibrating mechanism is a vibrating material distribution push plate driven by a vibrating motor; and the paving and leveling mechanism is a roll shaft driven by a motor to rotate. The utility model relates to a small-sized vibrating and leveling machine, which can solve the problem of construction scenes under narrow working conditions through compact structural design. The equipment is small and exquisite in design and suitable for construction scenes of narrow working conditions such as the middle of a high-speed rail, has the functions of vibrating, distributing, paving and leveling, and can effectively improve the construction efficiency and quality.

The utility model discloses a punch structure, cutting tool and punch die relates to tensile cutting technical field. Among them, punch structure includes punch main part and punch head, and punch head is located at one side of punch main part, and punch head and punch main part coaxial arrangement, and the outer diameter of punch head is less than the outer diameter of punch main part, and the joint part of punch head and punch main part is first camber surface, and first camber surface is used for with the inner peripheral edge of through -hole and is in conformity. The utility model provides technical scheme to eliminate the gap of punch structure and workpiece, improves the punch quality of workpiece.

The utility model discloses a kind of automobile body side structure, it is related to automobile parts technical field, including side wall, the inner wall of side wall is fixedly connected with reinforcing rib, the inner wall of side wall is installed with sound insulation cotton, the side wall of side wall is fixedly connected with guide rail.The utility model is provided with side wall, reinforcing rib and sound insulation cotton, by the reinforcing rib of honeycomb shape being set, honeycomb reinforcing rib is supported by grid element mutually, the tensile force, shear force or bending force received is dispersed to multiple grid nodes, and the mechanical transmission path of " multiple point stress - overall bearing " is formed, to improve shear strength, strengthen the protection function of device, in the flexible matrix of using sound insulation cotton, the vibration transmission of side wall can be weakened by damping effect, metal component vibration can be blocked by solid conduction, avoid noise transmission into cabin to provide tranquil cabin environment for driver and passenger.

The utility model discloses an on-chip integrated collimation optical device, comprising a wafer, the surface of which is provided with a plurality of light-emitting areas arranged periodically; the adhesive layer covers the surface of the wafer, optical structures in one-to-one correspondence with the light-emitting areas are distributed on the outer side of the adhesive layer, the optical structures are used for collimating or collecting light beams emitted by the light-emitting areas, and the thickness T of the adhesive layer between the optical structures and the light-emitting areas is 10-500 microns; according to the on-chip integrated collimation optical device, through the innovative on-chip integrated design, the technical bottlenecks that a traditional collimation device is large in size, complex in alignment, high in cost and the like are solved, and remarkable breakthrough is achieved in the aspects of optical performance, production efficiency, application scenes and the like.

The utility model relates to a sealing device for keeping continuous operation of a workpiece in liquid, which comprises a rectangular groove body with two open ends at the upper part and small rectangular groove bodies arranged at the two open ends at the upper part of the rectangular groove body, the two ends of each small rectangular groove body are open ends, and clamping grooves are arranged in the small rectangular groove bodies and at the two open ends. Sealing devices for dividing the small rectangular groove body into at least four grids are arranged in the clamping grooves, a plurality of sealing devices form a sealing array, liquid collecting and deformation preventing devices are arranged among the sealing devices, and each sealing device is rectangular and is formed by fastening three layers of plates through screws; the three-layer plate comprises a left sealing backup plate on one side, a right sealing backup plate on the other side and a seal located between the left sealing backup plate and the right sealing backup plate, a round hole is formed in the middle of the three-layer plate, and a bar workpiece penetrates into the round hole in the middle of the sealing device of the small rectangular groove body on one side to enter the rectangular groove body. And the workpiece penetrates out of the middle round hole of the sealing device of the other small rectangular groove body, so that the sealing requirement of continuous operation of the workpiece in liquid is met.

The utility model relates to prestorage mechanism's technical field especially a kind of double-layer magazine prestorage mechanism of hemp flower packaging machine, it includes material conveying belt, the material conveying belt upper portion is installed one group or multiple groups of mechanical arm;The side of the material conveying belt is installed elastic pressure prestorage station;The side of the elastic pressure prestorage station is installed pillow pack machine prestorage station.This double-layer magazine prestorage mechanism of hemp flower packaging machine, by setting double-layer magazine prestorage mechanism, magazine can be realized continuous movement within limited magazine length, need not stop and wait for grabbing material;Double mechanical arm full-time operation 100% utilization rate;With seamless link of pillow pack machine, prestorage station eliminates station gap, so that magazine can be applicable to any pillow pack machine, midway full-automatic exemption manual.From artificial feeding to hemp flower single packaging, whole conveying mechanism link smooth, can effectively stop according to material card material condition, each component modular design satisfies the individualized needs of customer to product and is convenient for installation maintenance.

The utility model relates to the technical field of carton compaction, and discloses a carton layered compaction device which comprises a machining table, side plates are symmetrically fixed to the top end of the machining table, a set of compaction rollers are distributed on the inner walls of the side plates at equal intervals, a lead screw is rotationally arranged in the machining table, and a double-head motor is connected to the lead screw; and matched screw rod sliding blocks are arranged outside the screw rods on the two sides in a sliding mode, and the top ends of the two screw rod sliding blocks are connected with a first compaction supporting plate and a second compaction supporting plate correspondingly. The carton box is guided to be in place through the material guide plate, the top of the compaction roller is preliminarily compacted through transmission parts such as a motor, and a foundation is built for subsequent operation. The lead screw drives the lead screw sliding block, the first compaction supporting plate and the second compaction supporting plate are promoted to apply force from the side face and are matched with the top compaction roller to form multi-direction cooperative compaction, and gaps of the carton are effectively eliminated. And the stretching rod is linked with the contraction block to flexibly adapt to cartons of different sizes, and the baffles prevent the cartons from shifting in the compaction process.

This application relates to the field of unmanned aerial vehicle (UAV) technology, and more particularly to a high-strength carbon fiber shell molding process for UAV fuselages. The high-strength carbon fiber shell molding process for UAV fuselages includes the following steps: material preparation → cutting → coating with epoxy foam material → bonding → mold closing → hot pressing → demolding → finishing → finished product. The material preparation involves preparing carbon fiber cloth with the same carbon fiber direction. The bonding process involves bonding n layers of carbon fiber cloth coated with epoxy foam material on one side to m layers of carbon fiber cloth, respectively. The fiber direction angles of any two adjacent bonded layers of carbon fiber cloth are different, where n is 3-6 and m is 8-15 degrees. The high-strength carbon fiber shell molding process proposed in this application, through simple process steps and optimized material combinations, can produce high-strength carbon fiber shells with excellent appearance quality, meeting the strength and appearance quality requirements of UAV fuselages, and has low cost and high production efficiency.

This utility model discloses a positioning steel plate device, relating to the field of construction engineering technology. It includes: a positioning steel plate body having two opposing surfaces, a rebar positioning hole, and a pre-drilled hole for a vibrator, wherein both the rebar positioning hole and the pre-drilled hole for the vibrator penetrate both surfaces of the positioning steel plate body; and an elevation adjustment unit for adjusting the height of the positioning steel plate body relative to the ground. Compared with existing technologies, the rebar positioning hole in this utility model provides rapid and highly accurate rebar positioning. Furthermore, the elevation adjustment unit allows for adjustable height of the positioning steel plate body and controllable rebar extension length, reducing the risk of rebar misalignment and insufficient vertical rebar extension length during construction. This improves on-site quality control and ensures better construction quality.

This invention relates to the field of ring main units (RMUs), and discloses a safety protection RMU adapted to smart grids. The RMU includes a housing with two symmetrical left and right hinged doors at the door frame. A circular waterproof groove is also provided at the door frame. When closed, the doors enclose the waterproof groove. The RMU also includes a canopy assembly and a support assembly. The canopy assembly includes a tarpaulin, a straight plate, and a retractable rod. One end of the tarpaulin is connected to the retractable rod, and the other end is connected to the straight plate. This application achieves multiple seals when the door is closed through the waterproof groove and the tarpaulin. The height difference between the central rod and the straight plate allows the tarpaulin to form an inclined roof when the door is open, preventing rainwater backflow. A moving plate drives a U-shaped slider to laterally widen the tarpaulin and eliminate gaps. A gear and rack linkage automatically forms a diagonal brace when the RMU is pulled out, comprehensively improving the RMU's leak-proof performance, maintenance convenience, and operational safety.

The invention provides a high-dispersion high-rate polyanion sodium battery positive electrode material and a preparation method thereof, the positive electrode material comprises ferric sodium pyrophosphate and carbon, and meets one or more of the following conditions: (1) the positive electrode material exists in the form of primary single crystal particles; (2) the D50 of the positive electrode material is 0.5-2.5, and the D90 of the positive electrode material is 1-5; (3) the compaction density of the positive electrode material is 2.0-2.1 g / cm < 3 >; (4) the molecular formula of the ferric sodium pyrophosphate in the positive electrode material is Na4Fe3 (PO4) 2P2O7; and (5) the carbon content of the positive electrode material is 1.0-2.5 wt%. According to the preparation method, anhydrous iron-phosphorus compounds are adopted as precursors, and the interaction among particles is greatly weakened by virtue of weak interaction among the anhydrous iron-phosphorus compounds, synergistic particle size regulation and low-temperature sintering, so that primary small ferric sodium pyrophosphate particles which are regular in morphology and highly dispersed are prepared; and gaps caused by loose aggregation among the primary particles are eliminated, so that the prepared positive electrode material has relatively high compaction density.

The application provides a kind of for city flood control operation vehicle, belongs to city flood control technical field, including lower vehicle body, the both sides of lower vehicle body are rotationally arranged with track wheel, and the top of lower vehicle body is connected with carriage by lifting mechanism;Fixedly arranged with fixed frame in lower vehicle body, slidingly arranged with sliding plate in fixed frame, spring is arranged between sliding plate and fixed frame;Slidingly arranged with hinged seat in sliding plate, and the outer surface of hinged seat is rotationally arranged with swing frame;Driving element acting on hinged seat is arranged on fixed frame, and linkage assembly acting on swing frame is arranged on sliding plate. Through the cooperation design of driving element and linkage assembly, swing frame and water pump can be automatically extended or withdrawn from the tail of carriage, and swing frame is automatically rotated from vertical state to horizontal state during the extension process, without manual handling. When facing areas where personnel cannot enter or unknown hazards exist, the operator can continue to move the water pump by driving element, thereby improving the operation safety.

The invention discloses an intelligent low-carbon cement component pouring forming system. The intelligent low-carbon cement component pouring forming system comprises a mold opening and closing mechanism, a mold, a pouring mechanism and a control unit. The mold is composed of two half molds, each half mold comprises a mold base and a module formed by splicing a plurality of replaceable modules, and an independently-controlled vibrator is integrated in each module. According to the system, the forming cavities in different shapes can be quickly reconstructed by replacing or recombining the modules, so that the flexibility and low-cost reuse of the mold are realized. And the control unit can perform independent and differentiated vibration control on the vibrator of each module according to the three-dimensional model of the component, so that the compactness and uniformity of the concrete are remarkably improved. A heating runner is integrated in the die holder, high-efficiency maintenance can be carried out by utilizing low-carbon heat sources such as waste heat, and an exhaust passage is arranged to balance internal pressure. The method has the characteristics of high production flexibility, excellent component quality, energy conservation and environmental protection, and is suitable for intelligent production of various prefabricated components.

The present application relates to a semiconductor structure and a method for manufacturing the same. The semiconductor structure comprises an electrode covering layer on a substrate, a contact structure comprising a first part and a second part, the first part being in contact with the electrode covering layer, and the bottom of the second part being in contact with the top of the first part, the width of the first part being greater than the width of the bottom of the second part, and the lower surface of the contact structure being not lower than the lower surface of the electrode covering layer. Compared with the contact structure with equal width, the electrode covering layer contact structure increases the contact area between the contact structure and the electrode covering layer, reduces the contact resistance and eliminates the voids in the contact structure. Moreover, the first part in contact with the electrode covering layer serves as a support during the chemical mechanical polishing process, avoiding the problems of load effect or depression of the contact structure.

This invention relates to the field of fire-resistant insulated cable manufacturing technology, and discloses a continuous manufacturing process for high-yield mineral-insulated fire-resistant cables, comprising: pretreatment, drawing pure copper rods into wires and then stranding and pressing them to obtain stranded copper conductors; insulation wrapping, wrapping mica tape around the outer wall of the stranded copper conductors to obtain an insulating core; filling and forming, longitudinally wrapping copper tape around the outer wall of the insulating core, and filling the space between the copper tape and the insulating core with magnesium oxide powder to form an insulating layer; sheath welding, welding the gaps between the copper tapes after longitudinal wrapping to obtain a copper protective sheath; corrugating and shaping, rounding the copper protective sheath, and then rolling the copper protective sheath into a corrugated tube shape to obtain a cable; softening and straightening, performing a first annealing treatment and a second annealing treatment on the cable in sequence, and performing a first water cooling treatment on the cable after the first annealing treatment; protection and cooling, placing the cable after step six into a nitrogen pipeline for cooling, and then performing a second water cooling treatment on the cable.

The application relates to a seamless construction method for an ultralong hot-rolled concrete structure, which comprises a rectangular bin, a concrete formwork is arranged on the top surface of the rectangular bin, a fixing mechanism for fixing the concrete formwork is arranged on the rectangular bin, and a vibrating mechanism for vibrating concrete in the concrete formwork is arranged in the rectangular bin. When the seamless construction method for the ultralong hot-rolled concrete structure is used, the concrete is poured and shaped through the concrete formwork, the concrete formwork is fixed on the rectangular bin through the fixing mechanism, the concrete formwork is conveniently disassembled and replaced by concrete formworks with different sizes through the fixing mechanism, the limitation of the device is reduced, the practicability is better, meanwhile, the concrete formwork can be taken down and placed aside to wait for the solidification of the concrete after pouring, the standby concrete formwork is conveniently used for construction, the utilization rate of the device is improved, the practicability is better, and the device is more convenient to popularize and use.

The utility model provides a powder metallurgy mould with powder anti -fly structure relates to powder metallurgy mould technical field, solved the powder metallurgy mould of commonly used in the use process, usually do not have good anti -fly structure, because material is in powder shape, when putting into the mould and processing, material can be affected and appear fly phenomenon, and then cause material waste's problem. A kind of powder metallurgy mould with powder anti -fly structure, it include: the fixed base one side is fixedly installed with connecting side seat;The connecting side seat top is slidably provided with storage tank;Through the setting of storage tank, by starting the down pressure cylinder on storage tank, its piston rod drives down pressure plate to move downward with constant pressure, and accurate pre -pressing force is applied to loose material, this step not only eliminates the gap between material, also improves filling density, effectively inhibits material fly, reduces raw material loss and maintains workshop environment clean.

The application discloses a preparation method of a copper block embedded rigid-flex combination board, and comprises the following steps: opening an installation groove at a position corresponding to the installation of a copper block on a core board and a position corresponding to the installation of a copper block on an inter-board prepreg, wherein the inter-board prepreg is a non-flowing prepreg or a low-flowing prepreg; preparing a ring-shaped prepreg, wherein a combination groove matching the shape of the copper block is formed in the middle of the ring-shaped prepreg, and the ring-shaped prepreg is a flowing prepreg; placing the ring-shaped prepreg into the installation groove; stacking the core board and the inter-board prepreg; placing the copper block into the installation groove, and the copper block is located in the combination groove of the ring-shaped prepreg; and high-temperature pressing. The preparation method of the copper block embedded rigid-flex combination board has good combination effect of the copper block and the rigid-flex combination board, and does not cause problems such as cavity, delamination, copper block protrusion or depression.

This invention discloses a low-carbon automated intelligent control system for refrigeration and snowmaking, relating to the field of refrigeration technology. It acquires image data of the surface of a cold air blower using a mobile industrial camera and performs preprocessing. The preprocessed image data is converted to the HSV color space, and adaptive threshold calibration is performed based on component differences. Frost layer regions are initially separated. The frost layer candidate regions are input into a deep convolutional neural network configured with three parallel feature extraction branches for color, contour, and brightness. A three-dimensional mutual reward function is embedded into a pre-set frost physical model based on heat and mass transfer principles to calculate the frost coverage rate. An equivalent thermal resistance model for the fins is established based on the frost coverage rate to calculate the deviation of the actual refrigeration system's energy efficiency ratio from the theoretical frost-free state. Based on the multi-dimensional features output by the frost layer identification module, the influence coefficient of frost thickness on heat exchange efficiency is calculated. An energy efficiency scheduling algorithm based on a reward function dynamically calculates and outputs the optimal defrosting intervention command.

The utility model discloses a water detection hole water stop sleeve, which relates to the technical field of mining water detection, and is technically characterized by comprising a water stop pipe, and a first water stop ring is fixedly mounted at one end of the water stop pipe in the length direction; the annular sleeves are distributed in the length direction of the water stop pipe at equal intervals, each annular sleeve is fixedly provided with a plurality of inclined rods, and the inclined rods are distributed in the circumferential direction of the annular sleeves at equal intervals; the threaded sleeve is detachably installed at the other end of the water stop pipe in the length direction, a second water stop ring is fixedly installed on the threaded sleeve, the water stop pipe is rotated, the multiple inclined rods rotate between the drill hole and the water stop pipe, the stirring effect on concrete grout is achieved, cavities in the concrete grout can be eliminated, and after the concrete grout is solidified, the water stop ring is fixedly installed on the threaded sleeve. And the firmness of connection of the water stop pipe, concrete and a drill hole can be ensured.

This invention provides a buffer structure and method for ore unloading in a ore pass, comprising a vertical main ore pass and an inclined branch ore pass. A buffer chamber is excavated on the outer side of the intersection of the main ore pass and the branch ore pass. The buffer chamber is used to fill fine ore, and the inclination direction of the buffer chamber is the same as that of the branch ore pass. A closed buffer device is installed at the entrance of the buffer chamber near the main ore pass. The buffer device is elastic. A dividing device is installed in the middle of the buffer chamber, dividing the buffer chamber into a buffer chamber located on the upper side and a storage chamber located on the lower side. The invention also includes a fine ore conveying device. This invention can increase the buffering and energy dissipation structure of the buffer chamber, reduce the frequency of maintenance of the buffer chamber by workers, improve the efficiency of underground construction, and ensure the safety of the underground structure.

The invention discloses a gallium nitride power device and a packaging method thereof. The packaging method comprises the steps of wafer pretreatment and chip packaging, wherein a copper-titanium-nickel-molybdenum metal layer is grown through electroplating / sputtering in pretreatment, a welding column is formed through etching, an air channel is reserved, and a single chip is obtained through scribing; the heat stress is relieved through the copper-titanium-nickel-molybdenum buffer layer, cavities are eliminated through the welding columns and the bottom partition design, the bonding cost is reduced through the copper connecting structure, meanwhile, the parasitic inductance can be reduced, and the heat dissipation efficiency is improved by combining the diamond cooling fins; finally, current uniformity improvement, reliability enhancement and cost optimization of gallium nitride device packaging are realized, and technical support is provided for large-scale industrial application.

The invention relates to a bionic filling mining method for an underground metal mine. The method comprises the following steps: stoping in sections in a stope; a bionic honeycomb air bag support; carrying out gradient microorganism consolidation filling; multi-source data fusion monitoring regulation and control; and subsection filling is conducted on the secondary mining section. Firstly, a bionic hexagonal honeycomb air bag and nanometer tear-resistant coating supporting structure is adopted, a pressure-displacement dual-mode sensor is combined, supporting of the goaf is rapidly and accurately completed, and it is ensured that the supporting compressive strength meets the long-term stability requirement under the deep high-stress and strong blasting impact environment. Then the modified tailing cementing slurry, a Thermus sp gradient bacterial agent and a nano calcium carbonate crystal nucleus are synergistically mineralized, so that the mineralization time is greatly shortened, and the recovery efficiency is improved; the filling body forms a matched surrounding rock stress arch with a hard bottom and a soft top through a process of adding the microbial agent in a gradient decreasing manner from bottom to top and a layered pouring process, so that the phenomena of bottom crushing and top void are eliminated.